OBD Guide
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B1305

Accessory Delay Relay Coil Circuit Short To Ground

B1305 is an OBD-II diagnostic trouble code meaning: Accessory Delay Relay Coil Circuit Short To Ground. Common causes: wiring harness damage, accessory delay relay malfunction. Estimated repair cost: $22–56.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$22–56 (est.)

Symptoms

  • No power to accessories after turning off the ignition
  • Interior lighting not working
  • The radio does not save settings

Causes

  • Wiring harness damage
  • Accessory delay relay malfunction
  • Short circuit to ground

How to Fix

  1. Check the integrity of the wiring harness
  2. Test accessory delay relay
  3. Measure the circuit resistance to ground
  4. Replace damaged components

Related codes

B1300B1301B1304

FAQ

What does the B1305 code mean?

B1305 is an OBD-II diagnostic trouble code that indicates: Accessory Delay Relay Coil Circuit Short To Ground

What causes a B1305 error code?

The most common causes of B1305 include: Wiring harness damage; Accessory delay relay malfunction; Short circuit to ground.

How do I fix a B1305 diagnostic trouble code?

To fix B1305: Check the integrity of the wiring harness. Test accessory delay relay. Measure the circuit resistance to ground. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1305?

Limited driving only, diagnose soon

How much does it cost to fix B1305?

The estimated repair cost for B1305 is $22–56. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat